Tonno Pro Lo Roll Soft Roll-Up Truck Bed Tonneau Cover | LR-3010 | Compatible with 2004-2008 Ford F-150 & Lincoln Mark LT 6'7" Bed (78.8") | Durable Weather Protection for Pickup Trucks | Perfect for Camping, Hauling & Outdoor Adventures

I've only had the cover a few weeks so far, but my initial assessment is 5 stars. It's obviously not as secure as the rigid tri-fold or tilt up covers, but it beats the pants off of the roll up covers. My 15 year old son and I installed it in about 15 minutes the night before a road trip to the Outer Banks of North Carolina.The cover kept everything dry and out of sight and with the tailgate locked, it's at least somewhat secure. A theif would have to cut the cover to access anything.Loading, unloading and transporting coolers, beach chairs, fishing gear and surfboards was simple thanks to the fold back design and securing the cover when carrying the surfboard (angled up & over the closed tailgate) was simple thanks to the retaining clips that hold the folded sections back when needed.The rail clamps nearest the cab needed the addition of some small wood blocks to secure tightly since I have bed rail covers, so if you also have rail covers, I'd recommend having a few small pieces of 1x2 (children's wooden blocks would even work) and a saw handy when installing. Other than that installation was a piece of cake.I've checked once a week to ensure the fit remains tight and so far so good. She stays firmly in place at 70 mph and although the vinyl panels ripple a bit in the wind, the unit doesn't budge. Gas mileage has improved and appearance is neat & clean. From the side, it's hardly noticeable.Time will tell if the 5 star rating holds up, but after a month or so and one good road trip under its belt, I can't find any downside. I'll update if/when anything changes.